Hello,
Mincoin's new difficulty adjustment algorithm has been in operation since the Hard Fork at height 1452840.
Splash Guard aims to keep our target spacing approaching 60-seconds regardless of whether large pools abruptly stop or start working.
In the past 30 days, we have seen the amount of work range between fewer than 300MH/s to greater than 2GH/s.
The chart below averages 60-minute intervals since the Hard Fork to show the target spacing over those periods.

Peaks and valleys represent adjustments when large amounts of hash have stopped or started working.
The mean value on the above dataset is 61.3 seconds.
When observed over a larger period of 24 hours, the variance is trivial.
Best Regards,
-Chicago